How many milliliters are in 1 teaspoon?

How many milliliters are in 1 teaspoon?

• A. 2 mL
• B. 5 mL
• C. 15 mL
• D. 1 mL

Answer: (B)

Knowing common volume conversions is essential. One teaspoon is defined to hold about 5 milliliters. This comes from the relationship with a tablespoon, which is 15 milliliters, and there are three teaspoons in a tablespoon, so 15 mL ÷ 3 = 5 mL per teaspoon. Therefore, 1 teaspoon equals 5 milliliters. The other numbers do not fit because they correspond to smaller amounts (1 mL, 2 mL) or a larger measure (15 mL is a tablespoon). In dosing contexts we typically use 5 mL per teaspoon for accuracy and ease of calculation.

Knowing common volume conversions is essential. One teaspoon is defined to hold about 5 milliliters. This comes from the relationship with a tablespoon, which is 15 milliliters, and there are three teaspoons in a tablespoon, so 15 mL ÷ 3 = 5 mL per teaspoon. Therefore, 1 teaspoon equals 5 milliliters. The other numbers do not fit because they correspond to smaller amounts (1 mL, 2 mL) or a larger measure (15 mL is a tablespoon). In dosing contexts we typically use 5 mL per teaspoon for accuracy and ease of calculation.